What does the OMC Cobra water pump housing kit include?

The kit typically contains the lower water pump housing, necessary gaskets, O-rings, seals, and mounting hardware for a complete replacement.

Which OMC Cobra models is this housing kit compatible with?

It's designed for most OMC Cobra sterndrives, including 3.0L inline 4 and V8 models from the 1980s to 1990s. Cross-reference your serial number for exact fit.

How do I know if my water pump housing needs replacing?

Look for signs like reduced water pressure from the telltale, engine overheating, visible cracks, or impeller debris in the drive oil.

Can I install this kit myself without special tools?

Yes, with standard metric sockets, a torque wrench, and snap-ring pliers. Follow a service manual for torque specs to avoid issues.

How often should I replace the water pump housing and impeller?

Replace the impeller every 2 years or 200 hours; inspect the housing during service. Full kit swaps every 5-7 years in heavy use.

Does this kit work with freshwater cooling systems?

Absolutely—it supports both raw water and closed cooling setups common in OMC Cobra applications.

What material is the housing made from?

High-strength cast aluminum with corrosion-resistant finishes for superior longevity in marine environments.

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Sierra 18-3349 OMC Cobra Water Pump Housing Kit

Sierra 18-3349 OMC Cobra Water Pump Housing Kit

SKU: 4002627 - UPC: 808282180423 - MPN: 18-3349

$47.49 ~~$59.89~~

Available Stock : 7

Keep your OMC Cobra sterndrive running cool and reliable with a durable replacement for the water pump housing. This kit steps in where factory parts wear out, delivering the robust construction boaters trust for season after season of worry-free performance on the water. Why This Water Pump Housing Kit Stands...

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Sierra 18-3349 OMC Cobra Water Pump Housing Kit Product Description

Keep your OMC Cobra sterndrive running cool and reliable with a durable replacement for the water pump housing. This kit steps in where factory parts wear out, delivering the robust construction boaters trust for season after season of worry-free performance on the water.

Why This Water Pump Housing Kit Stands Out

Designed specifically for OMC Cobra models, this housing kit combines precision engineering with marine-grade materials to handle the harsh saltwater and freshwater environments. Unlike worn originals that crack under pressure, it restores optimal water flow to prevent overheating and engine damage.

Corrosion-Resistant Build: Cast aluminum construction with protective coatings fights rust and pitting, extending service life even in brackish conditions.
Complete Kit Contents: Includes the lower housing, impeller cavity components, gaskets, and seals—everything needed for a full rebuild without hunting for extras.
Exact-Fit Design: Matches OEM specifications for seamless integration, ensuring proper alignment and pump efficiency from the first startup.
Enhanced Durability: Thicker walls and reinforced mounting points withstand vibration and torque better than aged stock housings.

Perfect Fit for OMC Cobra Sterndrives

Boat enthusiasts know compatibility is king. This kit bolts right into popular OMC Cobra setups from inline 4-cylinder to V8 configurations, covering a wide range of serial numbers. It's the go-to choice for restoring water circulation in both raw water and closed cooling systems.

Common applications include models from the late '70s through the '90s, where impeller wear and housing erosion are frequent culprits behind cooling failures. Verify your drive's setup against standard OMC Cobra blueprints for confidence.

Streamlined Installation Tips for DIY Mechanics

Swapping out a water pump housing doesn't have to sideline your boat for weeks. With basic tools and a weekend afternoon, you can tackle it dockside. Here's a pro rundown:

Prep Work: Drain the drive oil, remove the lower unit, and inspect the old housing for cracks or wear patterns—common around the impeller cavity.
Disassembly: Extract the old pump assembly carefully to avoid damaging shafts or gears.
Clean and Inspect: Flush mating surfaces and check for shaft straightness; replace the full pump kit if scoring is evident.
Assembly: Lubricate seals generously with marine grease, torque to spec (typically 15-20 ft-lbs on housing bolts), and reinstall.
Test Run: Prime the system, check for leaks, and monitor temps on your first outing.

Pro Tip: Always pair with a fresh impeller and wear plate for peak cooling—neglecting these shortens the housing's lifespan.

Long-Term Care to Maximize Uptime

A solid housing is only as good as your upkeep routine. Flush after every saltwater trip with a vinegar mix to neutralize salt buildup. Inspect annually for zinc erosion or hose clogs, and swap the pump every 2-3 years or 200 hours—whichever hits first. This prevents the all-too-common "no water telltale" meltdown.

Real-World Advantages for Boaters

Investing in this kit means dodging costly tow bills and engine rebuilds. Owners report cooler running temps, quieter operation, and revived performance after install. It's not just a part—it's insurance against the heat-related failures that plague neglected OMC Cobras.

Frequently Asked Questions

OMC Cobra Water Pump Housing Kit

Save $12 when you buy the Sierra 18-3349 OMC Cobra Water Pump Housing Kit for only $47 from NVN Marine! Same day shipping before 3pm.

Sierra 18-3349 OMC Cobra Water Pump Housing Kit Technical Specifications

Type:	Engine \| Miscellaneous
Vendor:	Sierra Engine Parts
Weight:	0.61 lb

Sierra 18-3349 OMC Cobra Water Pump Housing Kit User Reviews

Sierra 18-3349 OMC Cobra Water Pump Housing Kit Shipping & Return

Shipping Weight:	0.61 lb
Box Sizes:	3.00 (h) x 4.00 (w) x 5.00 (l)
Cubic Feet:	60.0
Returnable:	Yes

For detailed shipping policy please check our Shipping Policy and you can find our Return and Refund Policy here.